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django-url-imaging-0.4.1
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URL-based image processing for Django
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-url-imaging-0.4.1 |
| نام | django-url-imaging |
| نسخه کتابخانه | 0.4.1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Patrick Carroll |
| ایمیل نویسنده | patrick@patrickomatic.com |
| آدرس صفحه اصلی | https://github.com/patrickomatic/django-url-imaging |
| آدرس اینترنتی | https://pypi.org/project/django-url-imaging/ |
| مجوز | UNKNOWN |
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django-url-imaging
==================
django-url-imaging provides URL-based image processing functionality for Django
projects. It features a plugabble storage system with implementations for
storing images locally, on `Amazon S3`_ or using the SCP utiltiy to copy them
to another server.
Overview
--------
Once installed and configured, django-url-imaging will allow you to embed
thumbnails and other image transformations using nothing more than a specially
crafted URL. As an example, if you configured django-url-imaging to listen
for requests on ``/thumbnails/`` and needed to have a resized copy of the
image at ``http://media.mydomain.com/foo.jpg``, you would just create a link
like: ::
<img src="/thumbnails/resize/50x50/media.mydomain.com/foo.jpg" />
django-url-imaging provides many different URL-based commands_ for image
processing such as cropping, resizing, scaling, watermarking and `much more`_.
For more information on django-url-imaging, please check out the Wiki_.
Installation
------------
1. Download_ and install django-url-imaging using Distutils_:
``$ sudo python setup.py install``
2. Add the ``urlimaging`` app to ``INSTALLED_APPS``
3. Include ``urlimaging.urls`` as a resource in your ``urls.py``:
``(r'thumbnails/', include('urlimaging.urls')),``
4. Finally, depending on if you want to use S3 or local file storage, configure the appropriate settings:
Configuration
-------------
Depending on how you plan to store your images, you will need to add one of the
following sets of properties to your ``settings.py`` file:
Amazon S3
~~~~~~~~~
* ``IMAGE_STORAGE_BACKEND`` – This should be set to 'S3ImageStorage' to specify the S3 storage backend.
* ``S3_BUCKET_NAME`` – The name of the bucket (which should already be created) on S3 where images will be stored.
* ``AWS_ACCESS_KEY_ID`` – The AWS access key provided by Amazon.
* ``AWS_SECRET_ACCESS_KEY`` – The AWS secret access key provided by Amazon.
* ``S3_EXPIRES`` (optional) – The length of time which the S3-generated URL will be valid.
Local Image Storage
~~~~~~~~~~~~~~~~~~~
* ``IMAGE_STORAGE_BACKEND`` – This parameter should be set to 'LocalImageStorage' for the local image storage backend.
* ``IMAGE_WHITELIST_FN`` – A function which takes a url as an argument and uses that to decide whether or not to allow it to be processed. By default it is defined as ``lambda url: True`` which will allow for processing all images. To restrict it to only process images in your ``MEDIA_URL``, set it to:
``IMAGE_WHITELIST_FN = lambda url: settings.MEDIA_URL in url``
* ``IMAGE_STORAGE_DIR`` (optional) – The full path to the directory where images should be stored if this is not set, the value is inherited from MEDIA_ROOT. This directory should be publicly accessible since the application doesn't serve images directly from it.
* ``IMAGE_PATH_PREFIX`` (optional) - A path that is prepended to the path of the processed image.
SCP
~~~
If you'd like to use the ``scp`` command to copy the generated files to another UNIX-like server, configure the following options:
* ``PROCESSED_MEDIA_URL`` - A URL where the images can be accessed once they are stored
* ``SSH_MEDIA_USER`` - The username which has ssh access on the remote host
* ``SSH_MEDIA_PATH`` - The path to where the images will be stored on the remote host
* ``SSH_IDENTITY_FILE`` - If an identity file is required for access to the remote host, this is the path to that file.
Custom django-admin commands
----------------------------
django-url-imaging adds the following custom command to the project's django-admin:
* ``removeoldimages`` - Will remove any processed images which haven't been visited for a a predetermined time (defaults to a week). It is recommended that this is added to a scheduling system such as ``cron`` to be run every couple of days.
Additional Configuration
------------------------
* ``MEDIA_URL`` – If you're using the LocalImageStorage backend, setting this parameter gives the root url that serves images stored in the ``IMAGE_STORAGE_DIR``
* ``FONT_PATH`` - The path to the font file to be used when using the watermark operation. Defaults to ``/usr/share/fonts/truetype/freefont/FreeSansBold.ttf``
* ``IMAGE_EXPIRATION_DAYS`` - The number of days before images which haven't been visited are deleted. Defaults to ``7``.
.. _Amazon S3: http://google.com
.. _Download: http://github.com/patrickomatic/django-url-imaging/downloads
.. _Distutils: http://docs.python.org/distutils/
.. _configure: http://wiki.github.com/patrickomatic/django-url-imaging/installation
.. _commands: http://wiki.github.com/patrickomatic/django-url-imaging/how-to-use
.. _much more: http://wiki.github.com/patrickomatic/django-url-imaging/how-to-use
.. _Wiki: http://wiki.github.com/patrickomatic/django-url-imaging/
نحوه نصب
نصب پکیج whl django-url-imaging-0.4.1:
pip install django-url-imaging-0.4.1.whl
نصب پکیج tar.gz django-url-imaging-0.4.1:
pip install django-url-imaging-0.4.1.tar.gz